Synthesis and ionic conduction of sodium titanate Na2Ti3O7

Abstract

Chemical and phase transformations in the course of synthesis of sodium titanate Na₂Ti₃O₇ have been studied. Prepared sodium titanates have been characterized by X-ray powder diffraction analysis, scaning electron microscopy, and impedance spectroscopy, their electrochemical testing has been conducted. Mechanochemical interaction of titanium dioxide and sodium carbonate at the grinding stage has been revealed. The utilization of mesoporous titanium dioxide have been shown to provide a considerable decrease of final annealing temperature. Thus obtained titanates exhibit high electrochemical capacity.